William Rotsler Books

Star trek II

By William Rotsler

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Star Trek II: Short Stories

By William Rotsler

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Patron of the arts.

By William Rotsler

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Visions from nowhere

By William Rotsler

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The first novel in the series, "Return to the Planet of the Apes," in which astronauts, out of their time period, become involved with a society dominated by apes.

Return to the Planet of the Apes 3

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Futureworld

By William Rotsler

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SHIVA DESCENDING

By Gregory Benford

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The hidden worlds of Zandra

By William Rotsler

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Defence against terror

By William Rotsler

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The danger maze

By William Rotsler

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.